The secret landscape buried under the Antarctic ice sheet | Mathieu Morlighem | TEDxVienna
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- เผยแพร่เมื่อ 30 พ.ค. 2024
- The landscape hidden under thousands of meters of ice around the South pole remains one of the least known places on Earth. It has, however, a critical impact on the stability of the ice sheet as climate warms. We show here how we accidently developed a new method to determine the shape of the bedrock by combining satellite and airborne data with simple physics: the conservation of mass. We discovered major features, such as the deepest canyon on land on Earth, that have major consequences on the stability of the Antarctic ice sheet and therefore on global sea level rise. Dr. Morlighem received his PhD from Ecole Centrale Paris in 2011 in partnership with the NASA Jet Propulsion Laboratory and is today a Professor of Earth System Science at the University of California Irvine. His research is focused on predicting how much Greenland and Antarctica will contribute to sea level over the next centuries. Dr. Morlighem received several awards, including the 2014 NASA Cryospheric Sciences Most Valuable Player award. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at www.ted.com/tedx
How fascinating! Studying the physics of glacier ice and the role of the ice sheets in the climate system. Ice sheets play a central role in the climate system: storing significant amounts of fresh water and are the conveyor belts for transporting snow which accumulates inland back into the oceans. The interactions of the ice sheets with the atmosphere and the ocean have an internal variability but also affect the coupled ice sheet-climate response to external forcings on time scales of months to millions of years. If the current warming of the climate continues, the ice sheets will respond at a yet unknown rate, with unknown consequences for the rest of the climate system. A better understanding of the processes driving these changes is critical to improve projections of sea level rise.
Thank you for your work for the sake of the climate but also uncovering the mysteries of the artic and Antarctica
Thank you.
How does this not have more views?
I was just thinking the same thing,
Fear
@Heckonwheels sure cause you must be the only woke person. Phuck off.
I was always taught that when water freezes it will expand. An ice-berg is only ten percent above water level there-fore a O net level gain. Only when on solid ground would add to the problem. I'm I right or wrong!
Hello Larry, ice sheets are grounded on bedrock, they are not floating on water like sea ice.
8 comments ? bruh this is so underrated
People don't want to hear about things like this anything that seems have a threat towards the way of life they block it out until things start to happen
No! We understand when we are being lied to! The ice sheets have been receding for thousands of years! What people like you fail to see is that these people want control over everything and this is their vehicle!
Can we tow icebergs to Chile and kept for drinking?
But they told us that it never snows in the Antarctic did hear it wrong ?
You are right that Antarctica is very dry, especially in the interior of the ice sheet, but it does snow.
Why don't you transport the fresh water to the Sahara south Africa Pakistan and other area with low levels of drinking water
That's like moving sand from one beach to the other.
Actually you're on to the right idea. If you want to cool Earth down and increase the amount of water vapor in the atmosphere..... Cover the desert and reflect that heat instead of retaining it. Planting in the desert can't hurt anything.
It's been melting for 12 000 years.
In an age of skyscrapers, sea rise is like sunrise. Let it melt.
Exactly Right! They also don't point out that the weight of the ice depresses the land. As the ice melts the land rises. The rising land accelerates the ice along it's natural gravity driven path. They are using this BS to take control of the economy of this entire planet.
We spend 2k a winter to stay warm.
We spend 500$ in summer to keep cool. Let it warm.
You environmental/climate guys find it sooo dificult to make a model that works. You want it to predict the end of the world so badly that you always skew the parameters to favour destruction. Unfortunately all these climate predictions fail.
Well seA level IS rising as predicted
wow that is your take? just exactly what level of math have you done?
@@aidanmargarson8910 Probably more then you. 😂 You know there were dozens of predictions by so called scientists that the world would be uninhabitable now. 👏👏
@@clivemarriott7749so your thesis was in climate modeling? then surely you know how difficult it is to model a complex open-ended system?
@@aidanmargarson8910 TBH it is a difficult thing to factor in data from the climate, sea and land, past and present. You need to be a professor of Earth sciences like DR Judith Curry who does take all those factors into her calculations.
And in a hundred years when life is still doing just fine and you have bilked us for everything we have, and destroyed everything we have built..... You won't have to say anything because all those you promised will be long dead!